Boiler-alarm.



J. J. HINES.

BOILR ALARM.

APPLICATION HLED Amm?, 1911.

Patented Feb.25,1919.

ippleaiion filed ugual i221',

lori7 lo apprise the engineer of the fact so that he can lieve the boiler su filled with y Water before any damage Jcalles place.

The apparatus is designed rmore particularly for use on a marine boiler, and will be fully understood from the Vfollowing description and claims, when the saine are reed in connection with zlie drmving, accompanying and forming part of this specifico`l tion, in which:

Figure l is a view diagrarnniaic in chai"- aeter and showing the applicaiion of iny ep paratus to a marine boiler, and also showing that when a vessel is rolling or pitching in a heavy Seaway there is practically no rise and fall of Water in the center orp the boiler Where my novel apparatus is preferably lo cated, particularly when the apparatus is used on n marine boiler.

Fig. 2 is an enlarged vertical seeion of my novel apparatus.

Fig. 3 is an enlarged view. partly in eley"aiion and parily in verl-ical sec-lion show` ing the upperporlziou of the apparetus.

Similar numerals olE reference desiguaie corresponding parts in all of *die views ol2 the drawings.

rl"he boiler l may be oi" any 'fj/pe. und in urlherance ol" my inveiil'imi` n pipe hprel ernbly of iron, and :i column preliu'ahly of brass, are connected wilhl'he holler slielh Jclic connecions beingV effec-led in lhe preferred enibodinieuv ol. ihe invenlioiu through the inediiun of n sandwich joinlv :is heel: shown in Fig: the, said join includingr flanges l and suitable connecting means 5.

lil/lien eniifiloyed in :i marine boiler, ns in Fig. l. Vllie pipe fl exends dfm'nwnrdly ihrouefh fhe nud Wuier splice to the leloa Millen would also have it understood that 'che preferred arrangement oi" the pipe 3 is in libe center of the `boiler perpendicularly and longiudinelly, this in order that elle portion of Jalie Walzer adjacent lo the lower end of the pipe Will not` be materially affected by movement of the ship.

'lllie column 2 extends above and outside `the boiler shell so as to radiate heat from the Water contained in the column into 'the atmosphere, and in order to increase the radiating surface of the column, which is hollow, the said column is made iu convolute fo-rui as illustraed.

The upper end of the column 2 is flanged, as indiea'ced by 7, end to said flange 7 is connected by bolts l2 or other suitable ineens a closure plaie 8.

Al; l? is a conicainer, preferably of copper, and inv the said container is a mass 22 of mercury or equivalent material. The upper poriion of the container, which upper yportion is numbered i4, in Figs. 2 and 3, is carried through she plaie 8 and a gland 13 il1ereon, and may, when deemed. necessar be insulated from die said plate and glentli At l5 in the upper end. of lie container il is a plug of insulating material which is preferably ihrended in'so nn enlarged portion of the container as indicated by 16, and screwed in the said plug l5 is a terminal 19 designed to be connecled with the plus pole of a source-of electric energy (not shown). ity i8, and bearing in the Container lll :ind contacting with the mereury'is n eomplernenary erininnl designed lo be electrically connecied with the' alarm or alarms (not shown) through `the medium oi" which lzhe engineer and other persons in authority are put on notice when ilie Water iu the boiler is dangerously low.

Under norinul safe conditionsv` the boiler pressure operates io iforee Welter up Jche pipe Sl so as io flood the coluun Q which, as before slnied. is oulside ihe boiler. This Water being' efagfnan sind in :i column adapled to radiate heat into the a'rinosplieriu it follows izlia such Wuer will be considerably cooler than the Water within the boiler, and consequen'ifly 'the heal; given oil by such Water to expend the mercury 22% ntent, ln the event, howimmediately occupied by steam or high temperature, andin consequence the mercury 22 Will be quickly expanded and caused to electrically connect the terminals 3.8 and if) whereupon the alarm or alarms will be sounded.

inasmuch as my invention does not re side in the alarm or alarms, l `would have it understood thet Without involving departure from the scope of my claimed invention, any signal may bel employed to apprise those in authority that the Water in the boiler is dangerously low.

TIWhen desired a cock li may also be ernployed on the plate 8, Athe said coclr being connected to a small bore pipe 10. This pipe 10 may be carried downwardly and equipped with a second coclr (not shown) Within convenient reach of the operator so 'that incidental to the operation of getting,r

up steam in the boiler, air may be exhausted from the pipe 3 and the column 2. lt will aiso be noted that when the last mentioned cock is opened., during the operation of the boiler, the column 2 will be lilled withva* ter or" the same temperature as that in .the boiler, and the electrical circuit Will be com pleted to sound the alarn'l and enable the engineer to malte certain that the apparatusl is in goed Worlnnp; orderu Also when desired, a small copper pipe 9, Fig. 2, may be led from the feed pump side of check valve into the column 2, ad jacent to the mercury container llt-17. By virtue of this provision, 'feed Water'may be passed through the column 2 so that the temperature in the column `Will be the same as that of the feed Water, and this condition will continue until the Water level drops when by reason of the column being,l occupied by high temperature steam the circuit will be closed and the alarm sounded. lit Will be manifest that the feed Water Will pass through the said steam but will not appreciably diminish. the temperature thereof.

Having described invention, What claim and desire to secure by KlettersPatent, is:

l. llhe combination et a boiler, a ianged depending conduit carried by the upper por7 tion oi the boiler Within said boiler, an exterior hollow convoluted column provided with a flange portion at its top and a ange.

portion near its bottom and in alinement With said conduit, a closure plate secured to the flanged upper portion of the said column, a mercury container carried by said plate and depending Within the column, a terminal secured to the container intermediate its length and noirnally in contact in the boiler falling below. e 3, the said pipe 3 and' with the mercury therein, a second terminal' carried by the .upper end or the container and insulated therefrom normally resting out ot contact with the mercury, and means for simultaneously securing both of thev tlanged portions of the conduit, and the column to tie upper shell of the boiler in. v

vertical alinement.

2. rlhe combination of a boiler, a depending conduit secured to the upper portion of the boiler Within said boiler, an exterior convoluted column secured to the upper portion ot' the boiler provided with a flanged upper end to which is lXedly. secured a closure plate, a mercury container carried by said plate and depending Within the column, a terminal secured to the container intermediate its length normally in Contact with the mercury therein, a secured terminal hollow convoluted column communicating" in vertical alinemcnt with and forming a continuation of said conduit and an increased radiating surface, athermal circuit closing; n/leans positioned at the top portlon orp the column Within the same, and a valved -v air pipe secured at the top of the column depending therein andleadlng to the atmospliere.

el.. The combination of a boiler, a depending conduit secured to the upper portion of the boiler Within the same, an exterior hol. low column communicating With and forming a continuation of said column'l in verticel alinenient therewith, a closure plate se-l cured to the lianged upper portion of said column, a thermal circuit closing means car-v ried by said plate at the upper port of the column and depending therein andleading to the atmosphere, and a deed Water fitted into the top portion of the column and suspended ,therein` adapted to maintain a uniform temperature within the column until the Water in the' boiler reaches the danger level.

5. lhe combination ot a boiler, a depending conduit secured to the upper portion of the boiler Within the same, an exterior hollow' column secured to the boiler in vertical alinement with and forming a continuation of said conduit and increased capacity of radiating heat into the atmosphere; said column being formed of conductive material, valved'means secured to the top of the column and in communication With its interior and the atmosphere, -whereby air may be exhausted from both conduit and \col- ISQ umm thermal vircuit closing means secured to the top of the column and dependmg thereln, and n feed water plpe led lnto the top portion of the column adapted to pl'event the temperature from rising within the column sument to causo un alarm before the water in the holler remehos the danger level.

In testimony whereof I have hereunto set my hand m presence of two subscrlbmg Wlt- 10 nesses.

JOHN J. HINES.

Witnesses:

FRED E. LonnLY, W. H. VVILsoN. 

